We're still building up our course resources. However, I've spent most of the holidays upgrading our Moodle to 1.6.1 and there is an "import" feature which allows copying a course from elsewhere to a new location. You must be set as a trainer for both courses, old & new, and then the existing courses you have appear in the selection menu.
One of our primary teachers made a course for her class area which I was easily able to copy into our "whole school" area for others to use.
A screenshot is attached. (In German but "Import" is clear.)